If a Tenth Planet (Tentatively Predicted to Exist on the Basis

question 10

Multiple Choice

If a tenth planet (tentatively predicted to exist on the basis of perturbations in the orbits of Uranus and Neptune) were to be discovered with a sidereal period of 125 years, what would be the radius of its orbit (assumed to be circular) ?

• A) 8.55 au
• B) 125 au
• C) 1 au
• D) 25 au

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Definitions:

Journal

A record where all financial transactions are entered initially, before being posted to individual accounts in the ledger, following the double-entry bookkeeping.

Chronologically

In the sequence of time, where events or records are arranged in the order of their occurrence.

Journal Entry

A journal entry is a record in accounting that logs all the financial transactions of a business, capturing their effects on the accounts.

Journal

A record where all financial transactions are initially documented in chronological order.